Interface is Better Than Abstract Class
Java doesn’t have multiple inheritances, but the UI makes it easy to implement something like multiple inheritances without utilizing the extended keyword. If things don’t go as planned, you always need an interface. An abstract class does not give the liberty to have multiple modes, but they have abstract methods.

Know the Difference Between Array and ArrayList
It is often difficult for developers to decide whether to use an Array type data structure or ArrayList type. Both have several characteristics and must be used in different situations. Arrays are fixed in size, but ArrayList is variable in size. Changing the elements in the ArrayList is much easier…Read More